[Kamailio-Users] Extra byte in Content-length header

Hello, I am testing a cellphone software that registers with an Asterisk server through an outbound proxy (Kamailio+rtpproxy). I am capturing network traffic using wireshark and i notice that the SIP Register message from the cellphone has an extra byte in the Content-Length header, which causes Kamailio to discard the message with the following error output : - ERROR:core:parse_content_length: parse error near char [13][^M] - ERROR:core:get_hdr_field: bad content_length header Could it be that this byte was appended somewhere downstream(possibly at the wireless router..) or can i be sure that the byte was added during SIP Message construction by the cellphone software ? Thanks in advance, Vikram.